CVE-2026-75931

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (31st percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — Patch released this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

fast-uri is a URI parser for Node.js. It canonicalizes a host to its ASCII form only when the input carries an explicit scheme, so a scheme-relative reference such as a host preceded by two slashes is returned with its host verbatim and no error set. As a result fast-uri's own entry points disagree with each other: parse, resolve, normalize, and equal can yield different hosts for the same input depending only on whether a scheme is written out, and equal can return opposite verdicts for the same pair of hosts. An application that extracts a host with fast-uri to check it against a policy list and then resolves the same reference can make its decision on one host while the destination is another, enabling host confusion and policy bypass. The affected versions are 2.4.2 up to but not including 2.4.5, 3.1.3 up to but not including 3.1.6, and 4.0.1 up to but not including 4.1.3. The issue is fixed in 2.4.5, 3.1.6, and 4.1.3, which canonicalize the host consistently across the resolve path. Users should upgrade to a patched version.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
31st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 24, 2026

Last Modified

September 2, 2026

Advisory Details (2)

Auto-updated Aug 24, 2026
Patch available. Sources: github.
generic

Security Advisories | OpenJS Foundation CVE Numbering Authority

https://cna.openjsf.org/security-advisories.html
githubMentions a patch (unverified)

fast-uri vulnerable to host confusion via skipped IDN canonicalization on scheme-relative references · Advisory · fastify/fast-uri · GitHub

https://github.com/fastify/fast-uri/security/advisories/GHSA-5jgf-p345-68v8

Vendor Advisories for CVE-2026-75931(20)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(30)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrhdh/rhdh-hub-rhel9:17913114952026-10-08redhat
redhatopenshift4/nmstate-console-plugin-rhel9:17906099542026-10-07redhat
redhatrhdh/red-hat-developer-hub-backstage-plugin-scaffolder-backend-module-orchestrator:17912496402026-10-06redhat
redhatopenshift4/nmstate-console-plugin-rhel9:17907036462026-10-06redhat
redhatforeman-0:3.18.0.14-1.el9sat2026-10-01redhat
redhatcluster-observability-operator/troubleshooting-panel-console-plugin-rhel9:17908544942026-10-01redhat
redhatrhacm2/console-rhel9:17882836122026-09-28redhat
redhatmulticluster-engine/console-mce-rhel9:17901330812026-09-28redhat
redhatmulticluster-engine/console-mce-rhel9:17901353232026-09-28redhat
redhatansible-automation-platform-tech-preview/mcp-server-rhel9:17896690362026-09-23redhat
redhatnetwork-observability/network-observability-console-plugin-rhel9:17899782772026-09-23redhat
redhatopenshift4/nmstate-console-plugin-rhel9:17895928062026-09-22redhat
redhatopenshift4/nmstate-console-plugin-rhel9:17895678492026-09-22redhat
redhatrhdh/rhdh-hub-rhel9:17895542852026-09-21redhat
redhatsatellite/iop-vulnerability-frontend-rhel9:17896609692026-09-17redhat
redhatrhmtc/openshift-migration-ui-rhel8:17895463732026-09-17redhat
redhatsatellite/iop-host-inventory-frontend-rhel9:17896131072026-09-17redhat
redhatsatellite/iop-remediations-rhel9:17896155932026-09-17redhat
redhatdevspaces/dashboard-rhel9:17891628842026-09-17redhat
redhatsatellite/iop-advisor-frontend-rhel9:17896595652026-09-17redhat
redhatsatellite/iop-vulnerability-frontend-rhel9:17896609832026-09-17redhat
redhatsatellite/iop-advisor-frontend-rhel9:17896595732026-09-17redhat
redhatsatellite/iop-host-inventory-frontend-rhel9:17896245192026-09-17redhat
redhatsatellite/iop-remediations-rhel9:17896150952026-09-17redhat
redhatrhem/flightctl-ui-rhel9:17894867502026-09-16redhat
redhatrhem/flightctl-ui-rhel10:17894881112026-09-16redhat
redhatrhem/flightctl-ui-ocp-rhel9:17894864462026-09-16redhat
redhatrhem/flightctl-ui-rhel10:17894861812026-09-16redhat
redhatrhacm2/console-rhel9:17888809802026-09-15redhat
redhatrhacm2/console-rhel9:17888834722026-09-15redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 3 ecosystems)
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
node-ajv8.12.0~ds+~2.1.1-5 ... 8.20.0~ds+~cs7.1.6-1 (15 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
node-ajv8.12.0~ds+~2.1.1-5 ... 8.20.0~ds+~cs7.1.3-3 (12 versions)
  • every version up to 8.20.0~ds+~cs7.1.4-1: fixed in 8.20.0~ds+~cs7.1.4-1
—
npm(1)
PackageVulnerable rangeFix by version rangeDependents
fast-uri—
  • 2.4.2 up to 2.4.5: fixed in 2.4.5
  • 3.1.3 up to 3.1.6: fixed in 3.1.6
  • 4.0.1 up to 4.1.3: fixed in 4.1.3
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(18)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 23× in last 7d / 107× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 165 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-09 05:00 UTCEG score recompute
  3. 2026-10-09 05:00 UTCVendor advisory
  4. 2026-10-08 17:13 UTCEPSS rescore
  5. 2026-10-08 04:16 UTCEG score recompute
  6. 2026-10-08 04:16 UTCVendor advisory
  7. 2026-10-07 23:48 UTCEPSS rescore
  8. 2026-10-07 06:37 UTCVendor advisory
  9. 2026-10-06 19:20 UTCEG score recompute
  10. 2026-10-06 19:20 UTCVendor advisory
  11. 2026-10-06 15:18 UTCEPSS rescore
  12. 2026-10-06 07:46 UTCVendor advisory
  13. 2026-10-05 19:27 UTCEG score recompute
  14. 2026-10-05 19:27 UTCVendor advisory
  15. 2026-10-05 17:43 UTCEPSS rescore
  16. 2026-10-05 08:01 UTCEG score recompute
  17. 2026-10-05 08:01 UTCVendor advisory
  18. 2026-10-04 23:22 UTCEPSS rescore
  19. 2026-10-04 20:44 UTCVendor advisory
  20. 2026-10-04 06:40 UTCVendor advisory
  21. 2026-10-03 19:23 UTCEG score recompute
  22. 2026-10-03 19:23 UTCVendor advisory
  23. 2026-10-03 14:26 UTCEPSS rescore
  24. 2026-10-03 07:01 UTCVendor advisory
  25. 2026-10-02 19:41 UTCEG score recompute
Show 75 more
  1. 2026-10-02 19:41 UTCVendor advisory
  2. 2026-10-02 08:24 UTCVendor advisory
  3. 2026-10-01 21:08 UTCEG score recompute
  4. 2026-10-01 21:08 UTCVendor advisory
  5. 2026-10-01 19:50 UTCEPSS rescore
  6. 2026-10-01 07:36 UTCVendor advisory
  7. 2026-09-30 20:19 UTCEG score recompute
  8. 2026-09-30 20:19 UTCVendor advisory
  9. 2026-09-30 07:18 UTCEG score recompute
  10. 2026-09-30 07:18 UTCVendor advisory
  11. 2026-09-29 15:24 UTCEPSS rescore
  12. 2026-09-29 15:18 UTCVendor advisory
  13. 2026-09-28 22:03 UTCEG score recompute
  14. 2026-09-28 22:03 UTCVendor advisory
  15. 2026-09-28 10:46 UTCVendor advisory
  16. 2026-09-27 23:17 UTCEG score recompute
  17. 2026-09-27 23:17 UTCVendor advisory
  18. 2026-09-27 13:48 UTCEPSS rescore
  19. 2026-09-27 12:00 UTCVendor advisory
  20. 2026-09-27 00:44 UTCEG score recompute
  21. 2026-09-27 00:44 UTCVendor advisory
  22. 2026-09-26 15:59 UTCEPSS rescore
  23. 2026-09-26 00:28 UTCEPSS rescore
  24. 2026-09-25 16:53 UTCVendor advisory
  25. 2026-09-25 04:10 UTCVendor advisory
  26. 2026-09-24 16:53 UTCEG score recompute
  27. 2026-09-24 16:53 UTCVendor advisory
  28. 2026-09-24 14:04 UTCEPSS rescore
  29. 2026-09-24 05:29 UTCVendor advisory
  30. 2026-09-23 18:12 UTCEG score recompute
  31. 2026-09-23 18:12 UTCVendor advisory
  32. 2026-09-23 17:54 UTCEPSS rescore
  33. 2026-09-23 06:56 UTCVendor advisory
  34. 2026-09-22 19:39 UTCEG score recompute
  35. 2026-09-22 19:39 UTCVendor advisory
  36. 2026-09-22 16:01 UTCEPSS rescore
  37. 2026-09-22 07:44 UTCEG score recompute
  38. 2026-09-22 07:44 UTCVendor advisory
  39. 2026-09-21 21:09 UTCEPSS rescore
  40. 2026-09-21 20:28 UTCVendor advisory
  41. 2026-09-21 09:03 UTCVendor advisory
  42. 2026-09-20 21:47 UTCEG score recompute
  43. 2026-09-20 21:47 UTCVendor advisory
  44. 2026-09-20 20:16 UTCEPSS rescore
  45. 2026-09-20 10:30 UTCVendor advisory
  46. 2026-09-19 23:13 UTCEG score recompute
  47. 2026-09-19 23:13 UTCVendor advisory
  48. 2026-09-19 11:56 UTCVendor advisory
  49. 2026-09-19 00:35 UTCEG score recompute
  50. 2026-09-19 00:35 UTCVendor advisory
  51. 2026-09-18 19:28 UTCEPSS rescore
  52. 2026-09-18 13:19 UTCVendor advisory
  53. 2026-09-18 02:03 UTCEG score recompute
  54. 2026-09-18 02:03 UTCVendor advisory
  55. 2026-09-17 14:46 UTCVendor advisory
  56. 2026-09-17 03:28 UTCVendor advisory
  57. 2026-09-16 16:12 UTCEG score recompute
  58. 2026-09-16 16:12 UTCVendor advisory
  59. 2026-09-16 14:08 UTCEPSS rescore
  60. 2026-09-16 05:15 UTCEPSS rescore
  61. 2026-09-16 04:55 UTCVendor advisory
  62. 2026-09-15 17:38 UTCVendor advisory
  63. 2026-09-15 06:22 UTCEG score recompute
  64. 2026-09-15 06:22 UTCVendor advisory
  65. 2026-09-15 03:12 UTCEPSS rescore
  66. 2026-09-14 19:04 UTCVendor advisory
  67. 2026-09-14 07:47 UTCVendor advisory
  68. 2026-09-13 20:30 UTCEG score recompute
  69. 2026-09-13 20:30 UTCVendor advisory
  70. 2026-09-13 09:13 UTCVendor advisory
  71. 2026-09-12 21:57 UTCEG score recompute
  72. 2026-09-12 21:57 UTCVendor advisory
  73. 2026-09-12 15:02 UTCEPSS rescore
  74. 2026-09-12 10:41 UTCVendor advisory
  75. 2026-09-11 23:24 UTCEG score recompute

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-75931?
CVE-2026-75931 is a high vulnerability published on August 24, 2026. fast-uri is a URI parser for Node.js. It canonicalizes a host to its ASCII form only when the input carries an explicit scheme, so a scheme-relative reference such as a host preceded by two slashes is returned with its host verbatim and no error set. As a result fast-uri's own entry points disagree…
When was CVE-2026-75931 disclosed?
CVE-2026-75931 was first published on August 24, 2026, with the most recent update on September 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75931 actively exploited?
CVE-2026-75931 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75931?
CVE-2026-75931 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-75931?
A fix for CVE-2026-75931 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75931 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-75931

Explore →

Is Your Infrastructure Affected by CVE-2026-75931?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs